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2.1×0.3=0.56÷7=
2.5×8×0.1=1÷0.25=
0.1×3.9=0.5×2.3×2=
3÷0.1=0.35÷0.35=
1.8+1.2×5=

解:
2.1×0.3=0.630.56÷7=0.08
2.5×8×0.1=21÷0.25=4
0.1×3.9=0.390.5×2.3×2=2.3
3÷0.1=300.35÷0.35=1

分析:根据小数乘除法的计算方法进行解答即可.
点评:此题考查了小数乘除法的口算能力,注意运算符号,细心计算即可.
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2.1×0.3= 0.56÷7=
2.5×8×0.1= 1÷0.25=
0.1×3.9= 0.5×2.3×2=
3÷0.1= 0.35÷0.35=
1.8+1.2×5=

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科目:小学数学 来源: 题型:

1.23÷3= 0.8×11= 1-0.75=
1.7×0.4= 0.36÷12= 1.6+0.38=
1.2÷0.3= 0.75×4= 15×0.4=
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0.4×52= 1.6×0.4= 9.6÷6=
4.3-0.4= 7-6.2= 0.86-0.3=
8.8÷2.2= 2.6÷0.2= 0.15×3=
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0.14×5= 3×1.4= 4.9÷0.7=
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7.6÷3.8= 92÷2.3= 9.6-1.6=
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科目:小学数学 来源: 题型:阅读理解

4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=
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科目:小学数学 来源: 题型:解答题

1.23÷3=0.8×11=1-0.75=
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1.2÷0.3=0.75×4=15×0.4=
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(1)3.2×0.2             1.4×0.4          3.3÷3         1.2÷0.3
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(5)2-1.2              7.8÷6            8.4÷0.21        8.4÷0.7
(6)5.6+3.6           9-2.35             0.56÷8        1.23×3
(7)5.6÷0.4           4.5÷0.9           8.1×2         90÷3
(8)1.23+3            5.6+1.23          4.5×2         5.6÷1.4
(9)4.8÷1.2          7.2÷0.9          6.6÷1.1         7.2÷6
(10)2.1÷3            0.6×0.5          3.23×2         1.8÷3
(11)12.5÷0.1         0.32÷0.8         1.6+3.7          0.45×0.2
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